Kyoto? The Hummer? “An Inconvenient Truth”? Bono? BP? Katherine Hamnett? The Prius? Skinny Bitch? G Living? Will they make it into SIGG’s 100 most significant eco moments of the past century? And if so, where?!

For those of you in the dark, Swiss water bottle company, SIGG, and Laurie David’s environmental charity, stopglobalwarming.org, have joined forces to launch the 100 Eco Moments campaign. From today until Earth Day (April 22), they’ll be counting down the most world-changing ecological events – good and bad – that have shaped our planet.

Obsessed as I am with countdowns, I’m sure this initiative will generate many water cooler conversations. Here’s some entries that caught my eye: #98 – the 1910 birth of French oceanographer and environmental activist Jacques Cousteau (mai oui); #97 – in 1913 (the double-edged sword of) Automobile Mass Production as Ford introduces the assembly line to their plant.

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In addition to their Top 100, SIGG also has a Q&A series with some big minds in the environmental arena, including producer Laurie David, actor Ed Begley Jr, NBC News environment reporter Simran Sethi, ecofabulous founder Zem Joaquin, and Healthy Child Healthy World’s Christopher Gavigan. All this to celebrate this iconic reusable water bottle company’s 100th birthday.

And I must say on their behalf, that SIGG is still looking pretty fresh – it must be all that water.